Long-term follow-up of cystic thyroid nodules treated with percutaneous ethanol injection (PEI) using two different approaches.

Our study reported that the long-term outcome of CNs treated with PEI is excellent regardless of the PEI technique utilized; the larger the cystic amount, the higher the VRR. Based on present results, PEI can be considered as the first-line choice for treating thyroid CNs.